Diagnostic apparatus and method for adsorbent
US6324893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Nov 29, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An adsorbent diagnostic apparatus for an emission control apparatus is able to precisely determine whether an adsorbent for adsorbing unburned gas components has a fault or a deterioration. The diagnostic apparatus has an air-fuel ratio detector that is provided in a portion of the exhaust passage downstream of the adsorbent, and a controller that controls the amount of the previously adsorbed unburned gas component released from the adsorbent to the air-fuel ratio detector. Tic controller determines whether the adsorbent has a fault or a deterioration, based on a detection value of the air-fuel ratio detected by the air-fuel ratio detector, when the amount of the unburned gas component released from the adsorbent remains stable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.